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Geographic Information and Concentrations of Risk
12 Months Ended
Dec. 31, 2017
Segment Reporting [Abstract]  
Geographic Information and Concentrations of Risk
Geographic Information and Concentrations of Risk
Geographic Information
The following table details the geographic concentration of the Company’s assets (in thousands):
 
December 31,
 
2017
 
2016
United States and Canada
$
65,208

 
$
71,564

South Africa
68,186

 
63,693

Other
24,813

 
23,459

 
$
158,207

 
$
158,716


The following table details the geographic concentration of the Company’s net revenues based on shipping destination:
 
Year Ended December 31,
 
2017
 
2016
 
2015
United States and Canada
71.4
%
 
72.9
%
 
89.1
%
South Africa
17.9

 
16.6

 
4.6

Other
10.7

 
10.5

 
6.3

 
100.0
%
 
100.0
%
 
100.0
%

Concentrations of Risk
For the years ended December 31, 2017, 2016 and 2015, one customer accounted for 51.2%, 53.9% and 53.6% of net revenues, respectively. At December 31, 2017 and 2016, one customer accounted for 23.9% and 42.8% of total accounts receivable, respectively.